In: Physics
What would have a larger force on you when you were born: a doctor in the delivery room or the star Sirius. Show all calculations for full credit.
The average mass of a new born baby = 3.5 kg.
The average mass of an adult doctor = 70 kg
The mass of star Sirius = 4.02 x 1030 kg
Distance of star Sirius from the Earth = 8.15 x 1013 km
The distance of doctor from the new born baby = 1 m (say)
The gravitational force between two masses of masss 'm' and 'M', and separated by a distance 'r' is given by
Where, G is gravitational constant and G = 6.67 x 10-11 Nm2/kg2 .
So, force applied by doctor on the newborn baby is
And, the force applied by the star Sirius on the newborn baby is
Hence, the star Sirius would apply more force on the new born baby.
For any doubt pleasecomment.